12977967 has 8 divisors (see below), whose sum is σ = 17562496. Its totient is φ = 8522712.

The previous prime is 12977947. The next prime is 12977971. The reversal of 12977967 is 76977921.

12977967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12977967 - 2¹² = 12973871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32083 + ... + 32484.

It is an arithmetic number, because the mean of its divisors is an integer number (2195312).

Almost surely, 2^12977967 is an apocalyptic number.

12977967 is a deficient number, since it is larger than the sum of its proper divisors (4584529).

12977967 is an equidigital number, since it uses as much as digits as its factorization.

12977967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64637.

The product of its digits is 333396, while the sum is 48.

The square root of 12977967 is about 3602.4945523901. The cubic root of 12977967 is about 235.0005553027. Note that the first 3 decimals are identical.

The spelling of 12977967 in words is "twelve million, nine hundred seventy-seven thousand, nine hundred sixty-seven".